One thing to consider is that SERMs (especially clomid, but perhaps nolva as well) can create severe estrogenic side effects in SOME men--emotionally and physically. This is due to the fact that your body is actually flooded with estrogen (it is just not binding at all sites).
Reports of rampant mood swings, random crying, depression are the emotional side effects. Erectile disfunction would be the physical one that I can think of off the top.
Keep in mind these are rare (especially with nolva) but due effect some men.
That said, I think I would probably prefer SERM as the PCT just to get it over with quicker--seems a lot more economical than test taper.
Be sure you actually taper your SERM to keep from unleashing the flood gates.